Cell Signalling and Transduction In the signal transduction mechanism known as protein phosphorylation the signaling molecule binds to a surface receptor phosphorylated proteins act with enzymes to trigger the signal cascade All of these receptor kinases play a key role in triggering the signal cascade the signaling molecule binds to a surface receptor phosphorylated proteins act with enzymes to trigger the signal cascade All of these receptor kinases play a key role in triggering the signal cascade ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following statements about G proteins is false? They must be active before the cell can make needed cAMP They bind to and are regulated by guanine nucleotides They become activated when bound to GDP They are involved in signal cascades They must be active before the cell can make needed cAMP They bind to and are regulated by guanine nucleotides They become activated when bound to GDP They are involved in signal cascades ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation? All of these It would be more difficult to increase blood flow and reduce blood pressure Smooth muscle cells could not be made to relax Nitric oxide would no longer be produced All of these It would be more difficult to increase blood flow and reduce blood pressure Smooth muscle cells could not be made to relax Nitric oxide would no longer be produced ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction What is the name of the protein signaling molecule that alters glucose uptake, and where would its receptors be located? Insulin; beta cells of the pancreas NGF; the nerves involved in simple reflexes PDGF; the blood Insulin; many different cell types that use glucose for fuel Insulin; beta cells of the pancreas NGF; the nerves involved in simple reflexes PDGF; the blood Insulin; many different cell types that use glucose for fuel ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction A cell is known to respond to a particular signaling molecule. Which of the following must be true of this cell? It contains the receptor for the signaling molecule It is also the site of production for the signaling molecule It is in the heart muscle It is incapable of signal transduction It contains the receptor for the signaling molecule It is also the site of production for the signaling molecule It is in the heart muscle It is incapable of signal transduction ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following comes under the category of cell surface receptor? All of these G protein linked receptors Enzyme linked receptors Ion-channel linked receptors All of these G protein linked receptors Enzyme linked receptors Ion-channel linked receptors ANSWER DOWNLOAD EXAMIANS APP
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